All that I've read about single pilot, multi engine flying in IMC has made it sound like quite a challenge, anyone with experiance care to comment? i'd like to know what i'm in for
I do it lots. It's relatively easy providing you remember two things:
1) Plan ahead - especially in the UK where you won't have access to the airways system. You want to do as much on the ground as possible before you set foot near the aircraft
2) Think ahead - If you've planned the route and there's no surprises then you want to start thinking about your arrival as soon as you settle in the cruise.
Descent planning, speed reductions (I don't know what you fly now, but I suspect the operating speed range that you're used to may be doubled or possibly trebled on a twin), type of approach. If you're thinking about that 10 miles from the airfield then you've left it too late.
It's fun, but it's also a discipline. Approach it in that way and you'll enjoy getting it right every time.